Buggy code:
public class PatternParser { private ITokenSource tokenSource ; private ISourceContext sourceContext ; private boolean allowHasTypePatterns = false ; private Set pointcutDesignatorHandlers = Collections . EMPTY_SET ; private ReflectionWorld world ; public PatternParser ( ITokenSource tokenSource ) { } public void setPointcutDesignatorHandlers ( Set handlers , ReflectionWorld world ) { } public PerClause maybeParsePerClause ( ) { } private PerClause parsePerCflow ( boolean isBelow ) { } private PerClause parsePerObject ( boolean isThis ) { } private PerClause parsePerTypeWithin ( ) { } private PerClause parsePerSingleton ( ) { } public Declare parseDeclare ( ) { int startPos = tokenSource . peek ( ) . getStart ( ) ; eatIdentifier ( "declare" ) ; String kind = parseIdentifier ( ) ; Declare ret ; if ( kind . equals ( "error" ) ) { eat ( ":" ) ; ret = parseErrorOrWarning ( true ) ; } else if ( kind . equals ( "warning" ) ) { eat ( ":" ) ; ret = parseErrorOrWarning ( false ) ; } else if ( kind . equals ( "precedence" ) ) { eat ( ":" ) ; ret = parseDominates ( ) ; } else if ( kind . equals ( "dominates" ) ) { throw new ParserException ( "name<seq2seq4repair_space>changed<seq2seq4repair_space>to<seq2seq4repair_space>declare<seq2seq4repair_space>precedence" , tokenSource . peek ( ( - 2 ) ) ) ; } else if ( kind . equals ( "parents" ) ) { ret = parseParents ( ) ; } else if ( kind . equals ( "soft" ) ) { eat ( ":" ) ; ret = parseSoft ( ) ; } else { <START_BUG> throw new ParserException ( "expected<seq2seq4repair_space>one<seq2seq4repair_space>of<seq2seq4repair_space>error,<seq2seq4repair_space>warning,<seq2seq4repair_space>parents,<seq2seq4repair_space>soft,<seq2seq4repair_space>dominates" , tokenSource . peek ( ( - 1 ) ) ) ; <END_BUG> } int endPos = tokenSource . peek ( ( - 1 ) ) . getEnd ( ) ; ret . setLocation ( sourceContext , startPos , endPos ) ; return ret ; } public Declare parseDeclareAnnotation ( ) { } public DeclareAnnotation parseDeclareAtType ( ) { } public DeclareAnnotation parseDeclareAtMethod ( boolean isMethod ) { } public DeclareAnnotation parseDeclareAtField ( ) { } public DeclarePrecedence parseDominates ( ) { } private Declare parseParents ( ) { } private Declare parseSoft ( ) { } private Declare parseErrorOrWarning ( boolean isError ) { } public Pointcut parsePointcut ( ) { } private Pointcut parseNotOrPointcut ( ) { } private Pointcut parseAtomicPointcut ( ) { } public Pointcut parseSinglePointcut ( ) { } private void assertNoTypeVariables ( String [ ] tvs , String errorMessage , IToken token ) { } public Pointcut parseAnnotationPointcut ( ) { } private Pointcut parseAtAnnotationPointcut ( ) { } private SignaturePattern parseConstructorSignaturePattern ( ) { } private Pointcut parseWithinCodePointcut ( ) { } private Pointcut parseCflowPointcut ( boolean isBelow ) { } private Pointcut parseWithinPointcut ( ) { } private Pointcut parseThisOrTargetPointcut ( String kind ) { } private Pointcut parseThisOrTargetAnnotationPointcut ( ) { } private Pointcut parseWithinAnnotationPointcut ( ) { } private Pointcut parseWithinCodeAnnotationPointcut ( ) { } private Pointcut parseArgsPointcut ( ) { } private Pointcut parseArgsAnnotationPointcut ( ) { } private Pointcut parseReferencePointcut ( ) { } private Pointcut parseDesignatorPointcut ( PointcutDesignatorHandler pcdHandler ) { } public List parseDottedIdentifier ( ) { } private KindedPointcut parseKindedPointcut ( String kind ) { } public TypePattern parseTypePattern ( ) { } public TypePattern parseTypePattern ( boolean insideTypeParameters ) { } private TypePattern parseNotOrTypePattern ( boolean insideTypeParameters ) { } private TypePattern parseAtomicTypePattern ( boolean insideTypeParameters ) { } private TypePattern setAnnotationPatternForTypePattern ( TypePattern t , AnnotationTypePattern ap ) { } public AnnotationTypePattern maybeParseAnnotationPattern ( ) { } public AnnotationTypePattern maybeParseSingleAnnotationPattern ( ) { } public TypePattern parseSingleTypePattern ( ) { } public TypePattern parseSingleTypePattern ( boolean insideTypeParameters ) { } public TypePattern parseHasMethodTypePattern ( ) { } public TypePattern parseHasFieldTypePattern ( ) { } public TypePattern parseGenericsWildcardTypePattern ( ) { } protected ExactAnnotationTypePattern parseAnnotationNameOrVarTypePattern ( ) { } private ExactAnnotationTypePattern parseSimpleAnnotationName ( ) { } private boolean isAnnotationPattern ( PatternNode p ) { } public List parseDottedNamePattern ( ) { } public NamePattern parseNamePattern ( ) { } private void checkLegalName ( String s , IToken tok ) { } private boolean isAdjacent ( IToken first , IToken second ) { } public ModifiersPattern parseModifiersPattern ( ) { } public TypePatternList parseArgumentsPattern ( ) { } public AnnotationPatternList parseArgumentsAnnotationPattern ( ) { } public ThrowsPattern parseOptionalThrowsPattern ( ) { } public SignaturePattern parseMethodOrConstructorSignaturePattern ( ) { } private boolean maybeEatNew ( TypePattern returnType ) { } public SignaturePattern parseFieldSignaturePattern ( ) { } private NamePattern tryToExtractName ( TypePattern nextType ) { } public TypeVariablePatternList maybeParseTypeVariableList ( ) { } public String [ ] maybeParseSimpleTypeVariableList ( ) { } public TypePatternList maybeParseTypeParameterList ( ) { } public TypeVariablePattern parseTypeVariable ( ) { } private TypePattern [ ] maybeParseAdditionalInterfaceBounds ( ) { } public String parsePossibleStringSequence ( boolean shouldEnd ) { } public String parseStringLiteral ( ) { } public String parseIdentifier ( ) { } public void eatIdentifier ( String expectedValue ) { } public boolean maybeEatIdentifier ( String expectedValue ) { } public void eat ( String expectedValue ) { } private void eat ( String expectedValue , String expectedMessage ) { } private IToken pendingRightArrows ; private IToken nextToken ( ) { } public boolean maybeEat ( String token ) { } public String maybeEatIdentifier ( ) { } public boolean peek ( String token ) { } public PatternParser ( String data ) { } public PatternParser ( String data , ISourceContext context ) { } }

Fix:
throw new ParserException ( "expected<seq2seq4repair_space>one<seq2seq4repair_space>of<seq2seq4repair_space>error,<seq2seq4repair_space>warning,<seq2seq4repair_space>parents,<seq2seq4repair_space>soft,<seq2seq4repair_space>precedence,<seq2seq4repair_space>@type,<seq2seq4repair_space>@method,<seq2seq4repair_space>@constructor,<seq2seq4repair_space>@field" , tokenSource . peek ( ( - 1 ) ) ) ;